fitz gerald



W. H. FITZ GERALD.

No. 353,929. Patented Dec. 7, 1886.

3 Sheets-Sheet 2.

(No Model.)

W. H. FITZ GERALD.

MANUFAGTURB OP GROWNS PoR WATCH CASES. No. 353,929.

Patented Deo. 7, 1886-.

IIIIIIIIIIIII 3 Sheets-Sheet 3.

` W. H.` PIT BRALD.

MANUIEAGI'URB OP 0R S POR WATCH GASES.

, Patented Dec. 7, V1886.

NrTeD STATES PATENT OFFICE.

VALTER H. FITZ GERALD, OF BROOKLYN, NEV YORK.

MANUFCTURE OF CROWNS FOR WATCH-CASES.

SPECIFICATION forming part of Letters Patent No. 353,929, dated December7, 1886.

Application filed May 520, 1886. Serial No. 202.755.

To all whom it may concern.-

Be it known that l, WALTER H. FITZ GER ALD, of Brooklyn, in the countyof Kings, and in the State of New York, have invented certain new anduseful Improvements in the Manufacture of Crowns for X/Vatch-Oases; andI do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which- Figure l is a perspective view of the usual form ofwatch-crown. Fig. 2 is a like view ofa blank which is ready forcompletion by my method and dies. Fig. 3 is a perspective view of thefirst dies used separated from* each other. Fig. 4 is a vertical centralsection of the same immediately before operating upon a crownlblank.Fig. 5 is a like view of said dies when closed together upon said blank.Fig. 6 is a perspective View ofthe blank after having passed throughsaid dies. Fig. 7 is a like view of the dies employed for cupping orcontracting the open end of said blank separated from each other. Fig. 8is a vertical central section of the same immediately before operatingupon the blank shown in Fig. 6. Fig. 9 is a like View of the same whenclosed together upon said blank, and Figs. 10 and 11 are perspectiveviews of two forms of watchcrowns after having passed through saidcupping or contracting dies.

Letters ot' like name and kind refer to like parts in each of thefigures.

My invention is designed for usein the manufacture of watch-crowns inwhich the eX- ternal ornamentation is wholly or in part composed ofdiagonal grooves or ribs or irregular lines; and to this end saidinvention consists, principally, in the method employed for cupping thecrown, substantially as and for the purpose hereinafter specified.

it consists, further, in the dies used, suhstantially as and for thepurpose hereinafter shown.

ln the manufacture of watch-case crowns by dies the blank A is by anysuitable means given the general cup shape seen in Fig. 2, after whichit is placed within a die, B, that is composed of two or more sections,and the same united upon radial lines. Said die has a recess, b, thatcorresponds to the general shape ot', while somewhat larger than said(No model.)

blank and contains within or upon its face the configuration which it isdesigned to give to the finished crown. rlhe blank A is placed withinthe recess b, either before or after the sections are closed together,and is caused to closely till the same by means of a second die orpunch, C, that has the form of the interior of said blank, but issomewhat larger than the same, so that when forced down into the blankthe latter will be spread laterally and brought into such perfectContact with the .face of said recess as to cause its surface to havethe exact reverse of the configuration of the same. The next step is tocup the open end of the blank A, for which purpose I employ a die-block,D, which is provided at or Awithin the center of itsI upper face with arecess, d, that corresponds in size. shape, and ornamentation of surfaceto the like features of the semi-spherical end of said crown, and isadapted to receive and contain the same and to permit of its readyinsertion therein or removal therefrom.

Hinged upon or within the upper face of the die-block D are a number ofblocks, E, preferably three, which are arranged in radial lines atequidistant points around the recess d, and are adapted to turn inwardtoward or outward from said recess. When turned inward, said pivotedblocks impinge upon the said block D, and their contiguous sides meet,so as to be practically continuous and to form a circular diesuperimposed upon said lower solid die.

Vithin each pivoted die-block E is formed a recess, e, that, when saiddie is turned inward. coincides with the recess d and with the recessese of the other die-blocks, E, the whole constituting a recess whichexactly corresponds to the size. shape, and exterior nish cf thecompleted crown.

Each pivoted die-block E is held with a yielding pressure at the outerlimit of its motion by means of a spring, as seen in Figs. 8 and 9, andis moved inward simultaneously with the other pivoted die-blocks bymeans of lan upper die or punch, F, that has a concave lower end, whichin descending engages with the inner upper ends of said pivoteddieblocks, and moves the same downward and inward. if, now, acrown-blank is placed in position within the lower die, as shown in Fig.

IOO

8, and the upper die then moved downward, the pivoted die-blocks will becaused to impinge upon the upper part of the shell of said crown andcompressthe same, as seen in Fig. 9, into the formshown in Figs. l0.and11, such operation, termed cupping,7 being performed without defacementof the previously-formed ornamentation of said shell.v 4

If desired; the dies E may be arranged to slide horizontally inward,instead of moving upon pivots` as shown.

For some forms of crown it may be necessary that thebottom die, D,should be made in sections Which are capable of being spread apart toreceive or release the crown. Y

Having thus described my invention, what I claim is- As an improvementin the manufacture of Watch-crowns by dies. the method of cupping theshell of a partially-completed crown by placing the lower semi-sphericalend of the same within a correspondingly-shaped die-recess, and causingother dies, which move upon radial lines, to impinge upon and compressthe upper portion of said shell, substantially as and for` the purposespecified. y

2. As an improvement in the manufacture of watch-crowns, the methodwhich consists, first, in placing a cup-shaped blank within acorrespondingly-shaped die-recess that has upon or within its face anydesired ornamentation, next causing said blank to closely till saidornamented recess by forcing into the in terior of the formeracorrespondingly-shaped but larger die, and, lastly, placing the lowersemi-spherical end of said crown-blank within a corresponding die, andcausing other dies,

which move upon radial lines, to impinge upon and compress the upperportion of said blank, substantially as and for the purpose set forth.

3. As an improvement in mechanism for the pinge upon and curve inwardthe upper porv tion of said shell, substantially as and for the purposeshown.

4. As an improvement in mechanism for the manufacture of watch crowns,an interiorlyornamenteddievrecrss which is adapted toreceiveacup-shape'd crown-blank, and a plunger that is adapted to bepressed into the interior of said blank and force the latter against theface of said recess, in combination with a dierecess which. is adaptedto receive and contain the semi-spherical lower portion of saidcrown-blank, and with dies that are adapted to move upon radial linesand to inipinge upon and curve inward the upper portion'of said blank,substantially/as and for the purpose sho-wn and described. V

In testimony that I claim' the foregoing I have hereunto set my handthis 27th day of March, A. D. 1886.

WALTER H. Fi'rz GERALD.

